it's really easy.
first, run this:
http://www.innovative-sol.com/drivermax/
And save all of your drivers to a CD or USB drive or whatever.
Then, reinstall windows by following these steps:
http://www.pcworld.com/article/12997...indows_xp.html
If windows doesnt get all of them, tell it to look in the folder that you saved them to.
It may seem intimidating, but its really not, and really, good to learn and go through.
If you can install a program, you can do this.